Home / 31,309.64-43,205.69-17,159.75

Finding the Fourth Proportional to 31,309.64, 43,205.69 and 17,159.75

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Solution

The fourth proportional to 31,309.64, 43,205.69 and 17,159.75 is: 23,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,309.64 : 43,205.69 = 17,159.75 : x
  2. Step 2: Convert to fraction form
    31,309.64/43,205.69 = 17,159.75/x
  3. Step 3: Cross multiply
    31,309.64x = 43,205.69 × 17,159.75
  4. Step 4: Simplify right side
    31,309.64x = 741,398,838.98
  5. Step 5: Solve for x
    x = 741,398,838.98/31,309.64
  6. Step 6: Final answer
    x = 23,679.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.